/*
 *  Copyright (C) 2021 Huawei Device Co., Ltd.
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package com.rxohosnetworking;

import rx.Scheduler;
import rx.functions.Action0;

public class RxHosSchedulersHook {
    private static final RxHosSchedulersHook DEFAULT_INSTANCE = new RxHosSchedulersHook();

    public static RxHosSchedulersHook getDefaultInstance() {
        return DEFAULT_INSTANCE;
    }

    /**
     * Scheduler to return from {@link} or {@code null} if default
     * should be used.
     * <p>
     * This instance should be or behave like a stateless singleton.
     *
     * @return Scheduler
     */
    public Scheduler getMainThreadScheduler() {
        return null;
    }

    /**
     * Invoked before the Action is handed over to the scheduler.  Can be used for
     * wrapping/decorating/logging. The default is just a passthrough.
     *
     * @param action action to schedule
     * @return wrapped action to schedule
     */
    public Action0 onSchedule(Action0 action) {
        return action;
    }
}
